Manufacture of sheet-glass.



No. 841,752. PATENTED JAN. 22, 1907.

J. WHARTON. MANUFACTURE OF SHEET GLASS.

APPLICATION FILED'AUG.1, 1906.

3 SHEETS-SHEET 1.

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ATTORNEY PATENTED JAN. 22, 1907. J. WHARTON. MANUFACTURE OF SHEET GLASS.

3 SHEETS-SHEET 2.

INVENT IETE- WITNEEEESZ A No. 841,752. PATENTED JAN. 22, 1907.

J. WHARTON.

MANUFACTURE OF SHEET GLASS.

APPLICATION FILED AUG.1, 1906.

3 SHEETSSHEET 3.

WITN E55:

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ATTORNEY UNETEU STA tits PATENT @EFEQE.

JOSEPH WHARTON, OF-MONONGAHELA, PENNSYLVANIA.

MANUFACTURE OF SHEET-(caress.

I Specification of Letters Patent.

Patented Jan. 22, 1907.

A nmi n filed August 1, 1996. Serial No. 328,662.

To all 1071 0721 it may concern:

Be it known that I, JosEPH VVHARTON, a

citizen of the United States, residing'at' Monongahela city, in the county of VVashington and St ate of Pennsylvania, have invent ed certain new and useful Improvements in the Manufacture of Sheet-Glass; and I do declare thefollowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked 'vention is the construction of such a device that will simplify the manufacture of the foregoing-ennuierated forms of glass, the process contained 111 my invention being easy to operate and can be constructed and mainis a top plan view of said pan.

tained at a minimum of expense.

In the accompanying drawings in three sheets, forming a part of this specification, I have shown several detailed views of my invention, Figure 1 being a diagrammatical also shown, together with cam-lever means for elevating the glass from the table. Fig. 7, Sheet 3, ,is a detailed elevation showing method of removing glass from the pan to the revolving table. Fig. 8 is a cross-section of one of the buggies, showing means employed for elevating the glass from the tables: Fig.

9 is a cross-section of the pan, and Fig. 10 a perspective of the carrier used to convey the glass from the pan to the revolving table.

'Throughout the drawings the numeral 1. indicates brickwork forming the outside shell of the heating-kiln part of my invention, which is constructed in the well-known manner common to devices of a similar character. Inside of this shell and at a predetermined distance therefrom is an inclosed circular arched passage-way 2. Operatively arranged in this circular passage-way is a table 3,.supported on suitable buggies' i, which run on tracks 5. Arranged at suitable intervals on this revolving table are the stones 6 6, upon which the plates of glass rest when going throughthe several steps of the process. The table 3 is operated by means of a rack 7 and meshing pinions 8, geared to a motordriving means, or any other suitable and convenient plan for rotating this table may be adopted.

At a convenient point in the arched passage-way 2 is arranged a glazing-compartment 9, the same being constructed as tight as possible, only leaving suflicient clearance for the revolving table 3. This aforesaid compartment is the primary and essential feature which I employ in my devices to reheat the plates of glass and bring back the brilliancy. Enterin this compartment are gas-supply pipes 10, so arranged that the flame w ll not come into contact-w th the lass plate, but will be so deflected that the eat from said flame will be directed onto said plate. Also arranged in this compartment is a damper 11, also a peep-hole 12, which 1s in direct vision with a similar hole 13 formed through the shell 1.

Entering the passage-way 2 contiguous to the glazing-compartment 9 and above the table 3 are suitable guides or tracks 14, upon .which is mounted a skeleton carrier 15, the

detailed plan of which is shown in Fig 10. At the outer end of this carrier is a str1p of angle-iron 16, in which the plate of glass is intended to rest durin the reversing process, the operation of which will be further described hereinafter. Communicating through I the shell 1 with the interior of the furnace is an ordinary leer 17, having operatively arranged therein a plurality of oscillatmgca noperated lifting-rods 17 whichare designed to enter through the wall of the passage-way 2 and remove the sheet of glass from ofl the last stone in the series.

Operatively arranged in each buggy 9 is a means for elevating the plates of glass from the stone 6, and consists of a pair of rods 18, seated in recesses formed in said stone and having connected therewith rods 19 and 20, the latter having their lower ends connected with a bearing-plate 21. The method I emof three knives 33, 33, and 33".

molten mass.

ploy to raise the rods 18 consists of a lever 22, pivotally arranged at any convenient point adjacent the .furnace, the same being connected by a rod 23 with a lever 24, with which is in turn connected an arm 25, having a projecting portion 26, adapted to engage against the bearing-plate 21. While this means for raising the glass plate is satisfactory to the requirements ofmy invention, I do not wish to limit myself to the details as shown and described, as other just as satis factory means can be substituted.

The pan employed in my invention consists of a hollow casting 27, slightly tapering toward the outer end, the underside of this end portion being rounded off in order to facilitate the dipping process. The inside of this pan is recessed to any desired depth conforming in all particulars to the size, shape, and thickness of the plate of glass desired. Communicating with the hollow interior of this pan are pipes, or, if preferred, pieces of flexible hose 28 and 29, one being intended to supply said chamber with water and the other to carry ofi the same, thus providing a continual circulation in order to keep the pan as cool as possible. A suitable handle 30, secured to the rear portion of the pan and suspended by means of a rope or chain with an overhead buggy 31, affords a means for operating the pan in any manner desired.

The cutting or trimming means that I employ, but which likewise can be modified to suit existing conditions, consists of a suitable supporting-framework 32, upon which is mounted a lever operated and weighted set The knives 33 and 33 extend lon itudinally of the supporting-frame, while the knife 33 extends transversely thereof and is carried by the knives 33 and 33. This arrangement provides a cutting or trimming device that will quickly and accurately shear off the filmy layer of glass from both sides and the end and abuts the tapered front of the dipping-pan in order that the sheet of glass on being reversed prior to the reheating process will have practically clean edges i The manner of, operating the knives is optional, the manner shown being considered the .most expeditious.

In the operation of my invention the glass is first melted and brought to the proper consistency in 'a suitable tank 34. The next step in the operation consists dipping the hollow pan 27 into the tank to such a depth that upon withdrawal the recessed portion of said. pan will be completely filled with the It willbe readily apparent that owing to the overhead-carrier arrangement to which the pan is connected the op erator can swing said pan in any required position while in the act of dipping into the tank, and then again when the pan is removed with its recessed portion filled with molten glass it can easily be run to the cutting-table prior to the second step in the process. During the passage of said pan from the tank to the cuttingtable the glass has had time to set properly, and b r the time it is ready for the trimming process the plate has partially solidified. The pan is now placed on a suitable support, and by means of a lever arrangement, as shown in Fig. 5, or any other suitable operating means the triple knives are made to descend and trim off the filmy layer of glass from the two sides and lower end of the sheet.

During the first two steps in the process the molten glass has been prevented from adhering to the metal pan, owin to the wellknown fact that molten glass will not stick to a'water-cooled body of iron. There will be a continual circulation of water through the interior of the pan whenever in use. The side of the glass plate that has come in contact with the body of iron will naturally bei come chilled and be given a more or less frosted appearance. The only way to overcome this defect and restore the entire sheet to a uniform brilliancy and glow is by reheating this frosted side, and hence the necessity for the following steps in the process, This pan containing the sheet of glass is next run forward to a point opposite the track 14 and to the tanlgfor the subsequent dipping proc-.-

essf The first sheet of glassis then run mto the passage-way 2, directly over the table 3, an opening of just sufficient clearance in height and width having been made through the walls of the shell 1 and passage-way 2.

The next step is' to lift the sheetof glass clear of the carrier in order that the latter may be withdrawn for the purpose of receiving the next succeeding sheet. This movement is accompanied by pushing on the'lever 22, thus drawing on the'rod 23, operating the lever 24, in order that the angled part 26 of the arm 25 will exert a pushing movement on the plate 21, andby so doing ,will raise the rods 18, which will operate between the bars. of the carrier and 'lif'tthe sheet in suspended position. The carrier is then withdrawn and the sheet lowered onto the stone 6 by releasing the hold on the lever 22. The table 3 is next made to revolve by means of the motor and meshing pinions and rack until the buggy on which rests the sheet of glass is positioned in the glazin -compartment 9, where the sheet is again elevated by means of the rods and method aforesaid.

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is again raised from the stone by means of y the lever movement heretofore described, and thus permit the sheet to be drawn into the leer, where a more systematic cooling-off process is obtainable. V

In order to afford a means for reducing the temperature in the furnace, I have provided one or more draft-openings 34 through the brickwork 1. Through the shell 1 adjacent the inner end of the leer is a gas-supply pipe 35, thereby providing a means for heating said leer.

The rods 18, utilized to raise and lower the sheets of glass during the several steps of the operation, are covered with some heat-resisting substance and so arranged and constructed as regards size and form that there will be no danger of the rods leaving an impress or of cracking the sheets of glass.

Having thus fully shown and described my invention, what I claim 'as new, and desire to secure by Letters Patent, is 1 1. In a device of the character described, a water-cooled pan having a central'recessed portion to conform to any desired size, shape, or thickness of glass; means for reversing the sheet of glass molded inthe pan and for reheating the same to a uniform brilliancy; substantially as described and shown.

2. In a device of the character described, a water-cooled pan having a central recessed portion to conform to any desired size, shape, or thickness of glass; overhead means for suspending and manipulating said pan; cutting means for trimming the edges of the glass sheet; means for reversing the sheet of glass molded in the pan and means for reheating the same to a uniform brilliancy; substantially as described and shown.

3. In a device of the character described, a

water-cooled pan having, a central recessed portion to conform to any desired size, shape,

or thickness of-glass; overhead means for suspending and manipulating said pan; cutting means for trimming the edges of the glass sheet; means for reversing the sheet of lass molded in the pan; carrier ,means' for introducing said glass sheet into a reheating compartment; substantially as described and shown.

4,. In a device of the character described, a dipping-pan having a cored-out compartmentformed therein; means for introducing water to and from said compartment; a re- The cess formed in the top of said pan to conform to any desired size, shape, or thickness of glass; and a suitable handle on said pan; as

tively seated in a covered passage-way inside said kiln; a reheating-compartment formed in a portion of said covered passage-way; a leer communicating with the kiln; tracks entering the covered passage-Way above the table upon which is mounted a buggy and means for rotating said table; as and for the purpose set forth.

6. In a device of the character described, a suitable heating-kiln having a circular covered passage-way formed therein; a turntable operatively mounted on tracks inside the covered passage way; suitable stones mounted on said table; a reheating-compartment formed in a portion of said passageway; tracks entering the passage-Way above the table upon which is mounteda buggy; a leer communicating with the kiln and passage-way; means for rotating said table and means for regulating the heat throughout said kiln; as, and for the purpose set forth.

7. In a device of the character described, a'

water-cooled dipping-pan having a central recessed portion to conform to any size, shape, or thickness of glass; a sultable heating-kiln having a 'circularcovered passageway formed therein; a turn -table operatively mounted on tracks inside the passageway; means for rotating said table; suitable glass iholded in the pan onto the buggy and conveying same to the reheating-compartment as, and for the purpose set forth.

8. In a device of the character described, a water-cooled dipping-pan having a central recessed portion to conform to any size,

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shape, or thickness of glass; overhead means for suspending and manipulating said pan; a

suitable heating-kiln having a circular covered passage-way formed therein; a turntable operatively mounted on tracks inside the passa ge-way; means for rotating said table; suitable stones mounted on said table;

a reheating-compartment formed in a portion of said passage-way; tracks entering the passage-Wayabove the table on which is mounted a buggy; means for reversing the sheet of glass molded in the pan onto the buggy; means connected with the revolving table and passing up through each stone mounted thereon for lifting the sheet of glass clear of the buggy and for elevating said sheet of glass above the stone; as, and for; the purpose set forth.

9. In a device of the character described, a

table; a reheating-compartment formed in a portion of said passage-way; tracks entering the passage-way above the table on which is mounted a buggy; means for reversing the sheet of glass molded in the pan onto the buggy; lever and cam operated rods passing up through each stone for-the purpose of lifting the sheet of glass clear of the buggy and for elevating said sheet of glass above the stone; as, and for, the purpose set forth.

10. In a device of the character described, a Water-cooled dipping-pan having a central recessed portion to conform to any size, shape, or thickness of glass; overhead means for suspending and manipulating said pan; cutting means for trimming the edges of the glass sheet; a suitable heating-kiln having a circular covered passage-way formed therein; a turn-table operatively mounted on tracks inside the passage-Way; means for rotating said table; suitable stones mounted on said table; a reheating-compartment formed in a port on of said passage-way; tracks entering the passage-way above the table on which is mounted a buggy; means for reversing the sheet of glass molded in the pan onto the buggy; means connected with the revolving table and passing up through each stone municating with the kiln and passage-way;

as, and for, the purpose set forth.

11. In a device of the character described, a mold and means for elevating and reversing the glass molded therein and for reheating the same.

12. In a device of the character described,

a mold, means for suspending and manipulating said mold, means for reversing the glass in the mold, and means for reheating said glass.

13. In a device of the character'described, a heating-kiln, a table rotatable therein, means for depositing glass upon the table, and means for elevating the glass deposited thereon.

14. In a device of the character described, a heating-kiln, a table rotatable therein, means for depositing glass upon the table, and means operative from the exterior of the kiln for elevating the glass deposited thereon.

15. In a device of the character described, a heating-kiln, a table rotatable therein, means for depositing glass upon the table, and means movablethrough the table for elevating the glass deposited thereon.

16. In a device of the character described, a heating-kiln, a table rotatable therein, means for depositing glass upon the table, elevating means for the glass carried by the table and mechanism for operating the elevating means.

17. In a device of the character described, a mold, means for trimming the glass molded therein and means for reheating the same.

18. In a device of the character described,

a mold, and means for trimming the edges of the glass molded therein.

19. In a device of the character described,

a mold, and means for simultaneously trimming the edges of the glass molded therein.

20. In a device of the character described,

a mold, and means for simultaneously trimming the sides and ends of the glass molded therein.

p 21. In a device of the-character described, a heating-kiln, a glazing-compartment therein, a table movable in the kiln and through the compartment, means for depositing glass upon the table and means for elevating the glass within the compartment.

In testimony whereof I aflix my signature in presence of two witnesses.

.JUSEPH VTHARTON. Witnesses:

CHAS. J. Pon'rz, GEO. T. TMW 

